在冷却速度为102-105K/s的激光快速凝固条件下,对Jackson因子约为5-7的TiC型MC碳化物典型小面晶体液/固界面结构、生长形态及生长机制进行了系统的实验研究和理论分析.结果表明,尽管MC碳化物的生长形态随着凝固冷却速度的变化而发生显著变化,但其液/固界面始终保持原子尺度上光滑,其微观生长机制始终为台阶侧向生长,在102-105K/s凝固冷却速度条件下,MC碳化物生长机制并未发生由侧向生长机制向连续生长机制的转化.
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